GameFocus writes: "If you're an MMA fan, UFC 2009 Undisputed is a great game that wonderfully captures the nuances and multi-faceted aspects of MMA combat. Those who aren't familiar with the UFC will still enjoy the game as well; the game engine is well-crafted and offers a great simulation of hand to hand combat. It would have been easy to create a simple button masher and slap the UFC label on it. Instead THQ has created a detailed fighting engine that not only is a blast to play but gives you wonderful insight into MMA combat. It looks like UFC 2009 Undisputed will be the reigning champ off MMA games for a long time to come".